Door-lock.



A. TRESSELT.

DOQR LOOK.

APPIfIoATIoN FILED 001211, 1911.

1,032,034 Patented July 9, 1912.

e. 717. WMM

COLUMBIA PLANQGRAPH co.. WASHINGTON. n. c.

DNTE @TTFS PATENT FFDE.

.ALVIN TRESSELT, OF PASSAIC, NEW JERSEY.

DOOR-LOCK.

Application filed ctober 1l, 1911.

To @ZZ eti/0m t may concern Be it known that l, ALVIN Tnnssnn'r, a citizen of the United States, residing in Passaic, in the county of Passaic and State of New Jersey, have invented a certain new and useful Improvement in Door-Locks, of which the following is a specication.

The invention relates to means for securing doors, and is especially designed for the doors of dwellings, apartments, and like situations.

The main object of the invention is to provide heavy bars extending` transversely of the door, strongly secured to the latter and received in strong housings in the frame at each side thereof, with means for moving such bars, controlled by a locking mechanism, so that in order to force an entrance the door must be broken and virtually destroyed.

Another important object is to provide simple mechanism whereby the heavy bars may be easily set and withdrawn when the controlling lock is properly manipulated.

rlhe invention consists in certain novel features and details of construction and arrangement by which the above object-s are attained, to be hereinafter described.

The accompanying drawings form a part of this specification and show an approved form of the invention.

F igurc l is an elevation of a portion of the outer face of a door and casing equipped with the invention. Fig. 2 is a corresponding view of the inner face in the locked condition. Fig. 3 is a horizontal section taken on the line 3 3 in F ig. l, showing the locking means in plan view. The remaining figures are on a larger scale and show details. Fig. 4 is a face view of the mechanism employed in moving the bars, the cover-plate of the inclosing case being removed to show the interior. Fig. 5 is a plan view of one of the bars, with the inclosing case in horizontal section.

Similar letters of reference indicate the same parts in all the figures.

A is a door and B t-he jambs or casing therefor and B1 B1 the stops against which the door closes. 0n the inner face of the munnion B2 is strongly secured a case C having a cover-plate C1 and containing the mechanism for moving two bars D D which extend laterally therefrom in opposite directions guided in the case and in strong straps or clips E E secured to the hanging- Specification of Letters Patent.

Patented July, 1912.

Serial No. 654,084.

stile and lock-stile respectively, and their ends received in pockets or housings F F strongly fastened to the casings B and the inclosed studs at each side of the door. The bars are moved to project their ends into the housings F or to withdraw them therefrom by a pinion G mounted on a shaft G1, which may be similar to the usual squared rod by which a door-latch is operated, extending through the door and cover-plate C1 and equipped at each end with a knob G2. On th`e adjacent ends of the bars are extensions Dl D2 each overlapping the other bar and carrying on their adjacent faces racks D3 D4 in mesh with the pinion, one above and the other below, as shown, so that by turning the shaft G1 the bars are both moved simultaneously in the direction of their lengths, guided at their inner ends by the openings in the case C and at the outer ends in the clips E and also by the overlapped eXtensions D1 D2. In the upper extension D1 are two vertical holes d Z1 adapt-ed to receive the lower end of a vertical bolt H movable in guides C2 C2 in the case, and urged downwardly into such engagement by a spring H2 acting upon the head H2 of the bolt. rlhe hole (l is so located as to receive the bolt H and hold the bars in the withdrawn position relatively to the housings, and the hole Z1 so located as to hold the bars in the projected or locked position.

A slot o in the cover-plate, on the inner face of the door, receives a projecting pin H2 attached to the bolt, by which the latter may be lifted against the force of its spring H2 to release the extension D1 and free both bars D. From the outer face of the door the bolt is lifted by the rotation of the usual drum J1 of a Yale lock J or similar locking means moved by the insertion and turning of a suitable key, not shown. rlhe inner end of the drum carries an arm J 2 arranged to engage beneath a nose H4 on the head H1 of the bolt when the drum is rotated, and thus release the bars which may then be moved by turning the shaft G1 and pinion G through the medium of the outer knob G2.

To insure an initial movement of the bars, suflicient to prevent the bolt dropping back into the hole from which it has been lifted, a fiat spring K is mounted in the case with its free lower end between and in the path of two pins D5 D6 set in the upper face of the extension D1 and arranged to engage and deflect the spring K at each end of the l the housings.

movement of the extension. The tension of the deiiected spring is enough to move the bars slightly when the bolt is lifted, so that when the lat-ter is released it descends upon vand rides idly along the plane upper face of the extension D1 until the other pin contacts with and forcibly deflects the spring K in the opposite direction and the bolt drops into the other hole. Thus arranged the same spring K serves to induce the required slight movement in both directions in engaging the bars with, and disengaging them from The door thus protected by the strong bars cannot be burglariously opened without partially demolishing it, and the resultant noise of such breaking is likely to be so great as to preclude attempts at forcible entrance.

By raising the bolt I-I either by turning the key in the lock J on the out-side of the door, or by lifting the pin H3 on the inside, the bars are freed and may be easily moved by turning either' of the knobs G2, and the bars thus engaged with or disengaged from the housings F.

Instead of the simple pin H3 for raising the bolt from the inner face of the door, a locking means similar to the lock J on the outer face of the door may be employed.

In the device as shown the bars are in alinement and offer the appearance of a single bar extending across the door, but such alinement is not essential, and one bar may be omitted if preferred, the single remaining bar being arranged to carry the upper rack D3 and engage in the clip and housing on the lock-side of the door.

The improved locking device is designed to serve as an auxiliary to the usual lock and door-latch but may be used alone with a simple form of latch serving to hold the door in the closed condition.

Other modifications may be made in the forms and proportions of the parts and in the mechanism for operating the bars, without departing from the invention, and although the device is described as applied to house or apartment doors, it will be understood that it will serve successfully in other situations to which it may be adapted.

I claim 1. In a device of the character set forth, a bar movably secured to a door and adapted to engage the casing thereof, means carried on the door for moving said bar into and out of engagement with said casing, means for holding said bar in engaged position, independent locking means by which said holding means is controlled, and means for automatically giving initial movement to said bar in both directions.

2. In a device of the character set forth, a case mounted on the door, bars extending in opposite directions from said case and having their outer ends adapted to be received in housings on the door-casing, racks on said bars, a pinion in mesh with said racks, a shaft carrying said pinion, means for turning said shaft, a bolt arranged automatically to engage one of said bars and hold both of the latter in engagement with said housings, locking means on the door arranged to control said bolt, said bar being provided with projecting pins and openings, and means cooperating with said pins to give initial movement to said bar in both the opening and closing movements thereof.

3. In a device of the character set forth, a movable bar having holes therein, means for moving said bar longitudinally, a bolt arranged to be received in either of said holes, a nose on said bolt, a lock having a rotatable portion, an arm on the latter engageable with the under side of said nose and arranged to lift said bolt and free said bar, a spring acting upon the head of said bolt, a pin on said bar, a spring arranged to contact with said pin and serving automatically to move said bar when said boltis lifted.

4f. In a device of the character set forth, a case mounted on the door, a shaft extending through said case and door, knobs on the ends of said shaft, a pinion in said case mounted on said shaft, movable locking bars extending transversely of said door from said case and in alinement with each other, a rack on each bar in mesh with said pinion at diametrically opposite points thereon, one of said racks having holes therein, a bolt in said case adapted to engage either of said holes, a lock carried by said door and arranged to lift said bolt out of engagement with its rack, pins on the latter, and a spring mounted in said case between and in the path of said pins, whereby said spring is deflected by the contact therewith of one or the other of said pins when said bolt is engaged in either of said holes.

In testimony that I claim the invention above set forth I atix my signature, in presence of two witnesses.

ALVIN TRESSELT.

Witnesses:

CHARLES R. SEARLE, WM. TREssELT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of '.E'atents. Washington, D. C. 

